Dolph gumtow



(No Model.)

H. D. Re. ltmMToW.

JET APPARATUS.

Patented Nov. 29. 1887.

N4 PETERS. lwmuthngpmr. washington. n.1;

UNITED STATES PATENT OFFICEE HERMANN DANIEL RUDOLPH GUMTOW, OF BERLIN, GERMANY, ASSIGNOR TO M. LUTZNER AND H. GUMTOW, OF SAME PLACE.

.J Er APPARATUS.

, SPECIFICATION formingpart of Letters Patent No. 373,931, dated November 29, 1887.

Application filed January 8, 1886. Serial No. 188,047. (No model.)

To all whom it 77mg/ concern:

Be it known that I, HERMANN DANIEL RU- DOLPE GUMTow, of the'cityof Berlin, Kingdom ofPrussia,German Empire,have invented certain new and useful Improvements in Jet Apparat-us, of which the following is a speciication.

-The object of my invention is to provide a new and improved jet apparatus for deliverro ing water in ine jets Within a tube1 for the purpose of producing suction or air-pressure, and thus removing foul air from rooms or forcing pure arinto the rooms, as may be desirable.

The invention consists in various constructions aud combinations of parts and details, as will be fully described and set forth hereinafter. i

In the drawings, Figure lis a crosssectional 2c elevation of a tube, showing my improved jet apparatus in position. Fig. 2 is a detail crosssectional view of thejet apparatus. Similar letters of reference indicate corresponding parts.

The water-jet apparatus consists of the annular pipe or ring A', having the outwardlyinclined apertures B in the bottom, which guide the water-jets outward and downward at an inclination and against the walls of an' 3o air-tube, C, in which the water pipe or ring A is placed.

v D is a branch water-pipe provided with the nozzle E at right angles to the plane of the water pipe or ring A, and in the center of the same, which nozzle throws a central jet of water through the ring, thejets from said noz- Zle striking against the rebounding spray of the walls ot' the air-tube.

If the jet apparatus is placed in a position shown on the right-hand side OfFig.A 1, it creates 4o I a downward current or airAsuction in the righthand end or shank ofthe air-tube G and draws the air from the room.

If the jet'apparatus is placed in a position shown at the left of Fig. l, it creates a downward current in the lefthand shank of theairtube C and forces the air into the room.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- In a water-jet apparatus, the combination 5o of an air duct or tube surrounding the spraying device, an annular water pipe or ring having outwardly-inclined apertures for guiding jets of water against the walls of the air-tube, and a branch water-pipe provided with anozzle for directing aoentral jet of water through the ring against the rebounding spray from the walls of the air-tube, substantially as described. t

In testimony that I claim the foregoing as my 6o invention I have signed my name in the presence ot' two subscribing witnesses.

HERMANN DANIEL RUDOLPH GUMTOW.

vWitnesses:

B. Roi, H. ScHLoss. 

